create-react-app is showing all my code in production, how to hide it?

Question

In my chrome sources tab, I am able to view all my files by exact folder location. How can I hide them?

These weren\'t the problem in my previous project, w

Answer 1

In in package.json (Windows)

"scripts": {
...
    "cleanBuild": "rimraf ./build/*",
    "build": "npm run cleanBuild && set \"GENERATE_SOURCEMAP=false\" && react-scripts build ",
...
}